Definition of "hey"

An exclamation to get attention.  examples

A protest or reprimand.  examples

An expression of surprise.  examples

An informal greeting, similar to hi (mostly American_English.  examples

A request for repetition or explanation; an expression of confusion.  examples

Used as a tag question, to emphasise what goes before or to request that the listener express an opinion about what has been said.  quotations  examples

A meaningless beat marker or extra, filler syllable in song lyrics.  examples

(country dancing) A choreographic figure in which three or more dancers weave between one another, passing by left and right shoulder alternately.  examples

Alternative spelling of he (“Hebrew letter”)  examples